After Returning To Japan - Fujitsu F-02F Instruction Manual

After returning to Japan

When you return to Japan, the terminal is connected to
DOCOMO network automatically. If connection is failed,
perform the following operations.
Set [Network Mode] in [Mobile networks] to [LTE/3G/GSM
(Auto)]. P157
Set [Network operators] in [Mobile networks] to [Choose
automatically]. P157
158
International roaming